Aqueous synthesis and enhanced photocatalytic activity of ZnO/Fe2O3 heterostructures |
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| Authors: | Faouzi Achouri Serge Corbel Abdelhay Aboulaich Lavinia Balan Ahmed Ghrabi Myriam Ben Said Raphaël Schneider |
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| Institution: | 1. Université de Lorraine, Laboratoire Réactions et Génie des Procédés (LRGP), UMR 7274, CNRS, 1 rue Grandville, BP 20451, 54001 Nancy Cedex, France;2. Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, BP 10448, 63000 Clermont-Ferrand, France;3. Institut de Science des Matériaux de Mulhouse (IS2M), LRC 7228, 15 rue Jean Starcky, 68093 Mulhouse, France;4. Centre de Recherche et des Technologies des Eaux (CERTE), Laboratoire Traitement des Eaux Usées, P.O. Box 273, Tunis, 8020 Soliman, Tunisia |
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| Abstract: | We report a facile synthesis of ZnO/Fe2O3 heterostructures based on the hydrolysis of FeCl3 in the presence of ZnO nanoparticles. The material structure, composition, and its optical properties have been examined by means of transmission electron microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and diffuse reflectance UV–visible spectroscopy. Results obtained show that 2.9 nm-sized Fe2O3 nanoparticles produced assemble with ZnO to form ZnO/Fe2O3 heterostructures. We have evaluated the photodegradation performances of ZnO/Fe2O3 materials using salicylic acid under UV-light. ZnO/Fe2O3 heterostructures exhibited enhanced photocatalytic capabilities than commercial ZnO due to the effective electron/hole separation at the interfaces of ZnO/Fe2O3 allowing the enhanced hydroxyl and superoxide radicals production from the heterostructure. |
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| Keywords: | A Oxides A Semiconductors A Nanostructures B Chemical synthesis D Optical properties |
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